Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1a6ee1adf553cc…

MALICIOUS

PDF

86.4 KB Created: 2021-07-04 18:21:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: 01f869b01015e5661fc4b033623e7de8 SHA-1: 3507f5e46cda0e57194536c72514c7f437591a01 SHA-256: ba1a6ee1adf553cc6756849263624efbc1d5d54f74d6f47911644170fa531912
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://lightningriskassessment.com/ci/userfiles/files/molatobosufuluguxixa.pdf In PDF document text
    • http://goteneplast.se/files/images/file/1065930765.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb7c97129f2---bitiraxexetalomakazewol.pdfIn PDF document text
    • https://globalmediaminds.com/uploads/files/65781854173.pdfIn PDF document text
    • http://csc025.com/userfiles/file/20210702061131_70reg6.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ujidkhpugch0fclncm0a7rusm3/44078613062.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/f157b1edadf40a191550651ed2b5a1e1/14351237284.pdfIn PDF document text
    • http://castanienfamily.com/clients/74558/File/vuxeli.pdfIn PDF document text
    • https://salvatoredivilio.it/userfiles/file/47422848916.pdfIn PDF document text
    • https://www.ideaklinikizmir.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077789c267a4---79960347706.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210604102546.pdfIn PDF document text
    • http://btc-ltd.com/upload/file/4179859900.pdfIn PDF document text
    • http://amandamaitland.com/images/file/21406665715.pdfIn PDF document text
    • http://rheumatology.institute/upload/content/file/38045266796.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/77029305350.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c0d02c202877e89c68fbc72cbab49e9a/77593874079.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/caf7b903a104dfc16fdc7f01dbd37208/zonoravuxubenejoket.pdfIn PDF document text
    • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/160799ed9b4aed---penegivuxopefifi.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/zetofarosufinivukisogit.pdfIn PDF document text
    • https://micsys.in/userfiles/file/fizudazufetodarebodewo.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/tuwozuliwaf.pdfIn PDF document text
    • https://royal-art.pl/uploads/userfiles/files/gumefenaselulog.pdfIn PDF document text
    • https://angkalaris.com/contents//files/64875227092.pdfIn PDF document text
    • https://faresaldabbous.com/uploads/files/bafifivixomefopukapu.pdfIn PDF document text
    • https://taxiparga.com/wp-content/plugins/super-forms/uploads/php/files/427f462292fdf4873cb8caab7a66c2f3/votunuj.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a264d0753db---20244984219.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160719060b503e---85535993430.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/90b910cb1352fe682ab0cbef94a8eada/nafifalevajojoxeto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=vixen+sew+in+with+short+hairPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D7 16528 bytes
SHA-256: 19a369df77b90ceb219338a9d008938aa5d27e0b121ebe44c9127cc1ccc4719a
font_01_sfnt_off00011cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000134ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CA 10316 bytes
SHA-256: a6854230dc38985b41d825854a98806f73f551461b48355194386518653609e3

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